50719440 has 80 divisors (see below), whose sum is σ = 158079168. Its totient is φ = 13452288.

The previous prime is 50719411. The next prime is 50719447. The reversal of 50719440 is 4491705.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 50719398 and 50719407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50719447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55467 + ... + 56373.

Almost surely, 2^50719440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50719440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79039584).

50719440 is an abundant number, since it is smaller than the sum of its proper divisors (107359728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50719440 is a wasteful number, since it uses less digits than its factorization.

50719440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 50719440 is about 7121.7582098805. The cubic root of 50719440 is about 370.1617019042.

The spelling of 50719440 in words is "fifty million, seven hundred nineteen thousand, four hundred forty".